JP2593766Y2 - Primary radiator support device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a primary radiator support device for mounting two primary radiators in a dual beam antenna.

[0002]

2. Description of the Related Art Conventionally, as a supporting device as described above,
For example, there is one disclosed in Japanese Utility Model Laid-Open No. 3-112011. That is, as shown in FIGS. 10 and 11, the primary radiators 6 and 8 provided with the converters 2 and 4 are fitted into the concave portions 12 and 14 formed at both ends of the support portion 10 and supported by the fixing brackets 16 and 18. Attach to part 10. This support part 10 is attached to the fixing part 20.

[0003] The fixing portion 20 includes three arms 22 and 24 extending from the periphery of a parabolic reflector (not shown).
26, it is located near the focal point of the parabolic reflector. Walls 28 and 30 are formed on the fixing portion 20 so as to sandwich the support portion 10 from both sides thereof.
8 and 30, arms 32 on one primary radiator 6 side,
34 are extended and receive recesses 36, 3 for receiving the primary radiator 6
8 are formed on these arms 32,34. With the primary radiator 6 fitted in the recesses 36 and 38, the primary radiator 6 is fixed to the fixing part 20 by fixing fittings 40 and 42.

The walls 28, 30 are formed with arc-shaped grooves 44, 46 centered on the rotation of the primary radiator 6 attached to the recesses 36, 38, and are inserted through these grooves 44, 46. The support part 10 and the fixed part 20 are connected by bolts 48 and 50.

In such a supporting device, when adjusting the position of the primary radiator 8, the bolts 48 and 50 are loosened. As a result, the support section 10 becomes rotatable about the primary radiator 6 as a center of rotation, as shown in FIG. 11, so that the primary radiator 8 is rotated to a desired position, and then the bolts 48, 5
0 is fastened to the support part 10, and the support part 10 is fixed to the fixing part 20.

[0006]

In such a supporting device, since the center of rotation is set in the axial direction of the primary radiator 6, when the position of the primary radiator 8 is adjusted, the primary radiator 6 is moved. The arm 3 is attached to the fixing part 20 to prevent it from moving.
2 and 34, and the arms 32 and 34 have recesses 3
In order to fix the primary radiator 6 in the recesses 36, 38, the fixing brackets 40, 42 must be used, and the configuration becomes complicated. When the primary radiator 6 is attached, first, the primary radiator 6 is attached to the support portion 10 using the fixture 16, and the primary radiator 6 is attached to the concave portions 36 and 38 using the fixtures 40 and 42. The container 6 has to be mounted, and the mounting operation is troublesome. For this reason, a large number of screws have to be fixed, and the mounting operation has become more troublesome.

[0007]

In order to solve the above problems, the present invention has a fixing portion and a support portion. The fixed part is provided near the focal position of the parabolic reflector. A support part is formed separately from this fixing part,
The support portion has projecting portions projecting from both ends of the fixed portion in a state where the support portion is attached to the fixed portion. A concave portion in which the primary radiator is arranged is formed in each of the protrusions, and the support portion is attached to the fixed portion so as to be rotatable around one of the primary radiators as a rotation center. Contact the periphery of the primary radiator, which is the center of rotation ,
The contact portion extends from the fixed portion so that the next radiator is pressed against the concave portion in which the next radiator is arranged .

[0008]

According to the present invention, the contact portion extending from the fixed portion contacts the peripheral portion of one of the primary radiators, and the primary radiator is disposed in the recess where the primary radiator is arranged. Is pressed . In this state, even if the support portion is rotated, the position of the primary radiator pressed by the contact portion does not change, and the support portion rotates about the axial direction of the primary radiator as the center of rotation, and the other primary radiator rotates. The position of the radiator is adjusted.

[0009]

In this embodiment, the present invention is applied to a dual beam antenna, and has an offset parabolic reflector 100 for dual beams as shown in FIG.
As shown in FIG. 9, an azimuth angle adjustment device 102, an elevation angle adjustment device 104, and a rotation angle adjustment device 106 are provided on the rear surface of the reflection mirror 100 to adjust the azimuth, elevation, and rotation of the reflection mirror 100. Are provided respectively.

Three arms 108, 110, and 112 extend from the periphery of the reflector 100 to the vicinity of the focal point of the reflector 100.
A primary radiator 118 with 14 and a primary radiator 120 with converter 116 are mounted by a support device 122 according to the invention. Note that, for example, the converter 11
4 and 116 are for receiving radio waves from different communication satellites.

As shown in FIG. 3, the supporting device 122
Has a fixing portion 124 and a support portion 126. As shown in FIG. 1, the fixing portion 124 has a support fitting 128 and a support arm fitting 130, and the support arm fitting 1
30 is formed in a substantially rectangular parallelepiped shape. The recesses 13 for attaching the arms 108, 110, 112 respectively on both side surfaces and the lower surface of the support arm mounting bracket 130.
2, 134 and 136 are formed,
Arms 108, 110, 112 at 2, 134, 136
Are attached by bolts 138, 140 , 140 , 142 , respectively.

The support bracket 128 has a vertical U-shaped vertical side surface, and includes front and rear wall portions 128a, 128a.
The lower part of b is attached to the support arm fitting 130 by bolts 144 and 146. In FIG. 1,
The bolts 144 and 146 show that the support bracket 128 is fixed to the support arm mounting bracket 130 only on the front wall 128a side of the support bracket 128, but actually the 144 and 146 are also provided on the rear wall 128b side. Corresponding bolts are provided, and these bolts also
8 is attached to the support arm mounting bracket 130.

A support portion 126 is provided inside the support fitting 128.
Is arranged. The support portion 126 supports the support fitting 12.
As shown in FIG. 5, each of the projections 8 protrudes from both sides thereof, and has a vertical U-shaped vertical side surface. This support 126
The concave portions 148 and 150 are formed in the protruding portions of the. The primary radiators 118 and 120 are arranged in these recesses 148 and 150, and are fixed non-rotatably by Ω-shaped stoppers 152 and 154. 156, 156, 158, 158
Is a fixing bolt.

As shown in FIG. 1, the primary radiator 1 extends from the edge of the front wall 128a of the support fitting 128 on the primary radiator 118 side.
The arm 160 protrudes toward the 18 side, and the tip portion is an arc-shaped portion 162 that contacts the outer peripheral edge of the primary radiator 118 as shown in an enlarged manner in FIG. This arcuate portion 162 allows the primary radiator 118 to be recessed 148
Is fixed by pressing.

As shown in FIG. 3, two arc-shaped grooves 164 and 166 are formed on the front wall 128a of the support fitting 128, respectively. These grooves 164 and 166 are formed in an arc shape centering on the axial direction of the primary radiator 118, and the bolts 16 inserted in these grooves 164 and 166 are formed.
The support portion 126 is fixed to the support bracket 128 by 8 and 168.

The primary radiators 118, 12 with a converter supported by the supporting device 122 thus configured.
Adjustment for receiving a desired satellite communication by 0 is performed as follows.

As shown in FIGS. 8 and 9, it is assumed that the primary radiators 118 and 120 are already mounted by the support device 122. From this state, first, the rotation angle of the reflecting mirror 100 according to the communication satellite received by the converter 114 attached to the primary radiator 118 is obtained from a predetermined table, and the rotation angle adjusting device 106 is set to the rotation angle.
To adjust. Then, the elevation angle and the azimuth angle corresponding to the communication satellite received by the converter 114 are obtained from a predetermined table, and the azimuth angle adjustment device 102 and the elevation angle adjustment device 104 are adjusted so as to obtain the elevation angle and the azimuth angle.

Then, loosen the bolts 156 and 156,
The primary radiator 118 is rotatable so that the converter 114
So that horizontal or vertical polarization can be received by
The converter 114 and the primary radiator 118 are rotated. Such adjustment of the azimuth, elevation, and polarization is repeated a plurality of times, and the reception level is maximized by a level checker or the like.

Next, a desired communication satellite (this satellite,
This is a satellite different from the communication satellite being received by the converter 114. ), It is confirmed that the radio wave of the horizontal polarization or the vertical polarization is received.
And the primary radiator 120 and the converter 116 are rotated so that the reception level at the converter 116 is maximized by a level checker or the like.

Then, loosen the bolts 168 and 168,
With the center of the primary radiator 118 as the center of rotation, for example, as shown in FIG. 6 or FIG.
166, and thus the converter 116
The primary radiator 120 is adjusted by a level checker or the like so that the reception level is maximized. This vertical or horizontal polarization reception adjustment, converter 116 and primary radiator 12
The adjustment of 0 is performed several times.

When the converter 116 and the primary radiator 120 are adjusted, as shown in FIG. 4, the arc-shaped portion 162 of the arm 160 presses and fixes the primary radiator 118 to the concave portion 148, so that the support portion 126, Rotating converter 116 and primary radiator 120 along grooves 164, 166 also
The primary radiator 118 does not move from the focal position.
The received signal adjusted to the maximum level by the primary radiator with each converter is supplied to the receiver and the like from the output terminals 170 and 172 of each converter 114 and 116 via a coaxial cable.

In the above embodiment, the support bracket 128 and the support arm mounting bracket 130 are formed separately. However, both can be formed integrally. The arm 160 is provided only on the front wall 128a, but may be provided only on the rear wall 128b, or may be formed on both the front wall 128a and the rear wall 128b. In addition, although the support portion 126 has an inverted U-shaped vertical side surface shape, the support portion 126 may be formed using a rectangular bar or the like.

[0023]

As described above, according to the present invention, the contact portion extending from the fixed portion contacts the peripheral portion of one primary radiator, and the concave portion in which the primary radiator is arranged. Within
Pressing the primary radiator said. In this state, even if the support part is rotated, the primary radiator in contact with the contact part does not move ,
With this primary radiator as the center of rotation, the support rotates and the position of the other primary radiator is adjusted. Since the contact portion provided on the fixing portion is used to fix the primary radiator that is the center of rotation, the structure of the fixing portion is simplified, and the primary radiator that is the center of rotation is fixed. It is not necessary to use a special metal fitting or the like for fixing the container, which simplifies the configuration and facilitates the mounting operation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of a support device for a primary radiator according to the present invention.

FIG. 2 is a partially omitted plan view of the embodiment.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a partially omitted side view of the present embodiment.

FIG. 6 is a front view showing a state in which one primary radiator with a converter is rotated clockwise to a maximum in the present embodiment.

FIG. 7 is a diagram showing a state in which one primary radiator with a converter is rotated to the maximum in a counterclockwise direction in the present embodiment.

FIG. 8 is a front view of a dual-beam offset parabolic reflector using the support device of the present embodiment.

FIG. 9 is a side view of a dual beam offset parabolic reflector using the support device of the present embodiment.

FIG. 10 is an exploded perspective view of a conventional support device.

FIG. 11 is a front view of a conventional support device.

[Explanation of symbols]

 114 116 Converter 118 120 Primary radiator 126 Support section 128 Support bracket (fixed section) 130 Arm support bracket (fixed section) 148 150 Concave section 160 Arm (contact section)

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixing part provided in the vicinity of a focal position of a parabolic reflecting mirror, and projecting parts which are formed separately from the fixing part and project from both ends of the fixing part in a state of being attached to the fixing part. A support portion attached to the fixed portion so as to be rotatable around one of the primary radiators as a rotation center; and a rotation center as the rotation center. contacting the periphery of the primary radiator, the one
A contact portion extending from the fixed portion so as to press the secondary radiator against the concave portion in which the secondary radiator is disposed .